The crystal structure of two complexes of the isomers cis-syn-cis (isomer A) and cis-anti-cis (isomer B) of dicyclohexano-18-crown-6 with 4-methylbenzenesulfamide have been determined by X-ray single crystal diffraction methods. The two structures have been solved by direct methods and refined to agreement values of 0.067 and 0.038 for isomers A and B respectively. The first isomer forms an inclusion compound with a host/guest ratio of 1 : I; the second one of I:2. The amino groups of the guest molecules are connected by N-H...O hydrogen bonds with oxygen atoms of the polyether molecules. The methyl groups of 4-methylbenzenesulfamide do not form hydrogen bonds.[/p] The host-guest interactions in the molecular complexes, the reciprocal influence of the two molecules on their conformation and the intermolecular contacts between the molecules in the crystal are discussed.
Crystal Structure of Inclusion Compounds: the Complexes of the cis-syn-cis and the cis-anti-cis Isomers of Dicyclohexane-18-crown-6 with 4-Methylbenzenesulfamide / Y. A., Simonov; T. J., Malinowsky; E. V., Ganin; S. A., Kotlyar; G., Bocelli; Calestani, Gianluca; Rizzoli, Corrado. - In: JOURNAL OF INCLUSION PHENOMENA AND MOLECULAR RECOGNITION IN CHEMISTRY. - ISSN 0923-0750. - 8:(1990), pp. 349-361. [10.1007/BF01041890]
Crystal Structure of Inclusion Compounds: the Complexes of the cis-syn-cis and the cis-anti-cis Isomers of Dicyclohexane-18-crown-6 with 4-Methylbenzenesulfamide
CALESTANI, Gianluca;RIZZOLI, Corrado
1990-01-01
Abstract
The crystal structure of two complexes of the isomers cis-syn-cis (isomer A) and cis-anti-cis (isomer B) of dicyclohexano-18-crown-6 with 4-methylbenzenesulfamide have been determined by X-ray single crystal diffraction methods. The two structures have been solved by direct methods and refined to agreement values of 0.067 and 0.038 for isomers A and B respectively. The first isomer forms an inclusion compound with a host/guest ratio of 1 : I; the second one of I:2. The amino groups of the guest molecules are connected by N-H...O hydrogen bonds with oxygen atoms of the polyether molecules. The methyl groups of 4-methylbenzenesulfamide do not form hydrogen bonds.[/p] The host-guest interactions in the molecular complexes, the reciprocal influence of the two molecules on their conformation and the intermolecular contacts between the molecules in the crystal are discussed.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.